Skip to main content
. Author manuscript; available in PMC: 2020 Aug 27.
Published in final edited form as: Anal Bioanal Chem. 2018 Nov 22;411(3):765–776. doi: 10.1007/s00216-018-1498-4

Fig. 4.

Fig. 4

Mixtures of whole blood reference material (Seronorm™ Trace Elements L-3) mixed with various amount of metal standards (δ65Cu (A), δ56Fe (B), δ66Zn (C), and δ114Cd (D)). Circles reflect sample-standard mixtures or purified through column chemistry, while the diamond represents the original metal isotope standard